东道海子北凹陷侏罗系以下多次波的特征
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摘要
准噶尔盆地东道海子北凹陷具有很好的油气勘探前景,但由于侏罗系一下地层的实际地震反射波被侏罗系煤层的全程和层间多次波所掩盖,不能真实的反映地层的沉积、构造形态。地震反射中的多次波主要是由于侏罗系煤层的强反射波过于强,地震波在其中或其间形成比较强的折射和层间反射而形成。只有解决了多次波的问题,地层的沉积、构造特征才会更加清楚,才可以发现更多的地层、岩性、构造圈闭,指导准噶尔盆地东部的油气勘探。
There is very good potential for oil and gas exploration in the Dongdaohaizibei Sag of Junggar Basin. But the seismic reflection waves of Pre-Jurassic strata were covered by long-range and interbedded multi-waves of Jurassic coals, and it can’t reveal the real sedimentary characters and structural styles of the Pre-Jurassic strata. Because the reflection waves of Jurassic coals are so strong that the deflection and interbedded reflection formed in them or between them and caused the multi-waves of seismic reflection. Only after solving the problems of the multi-waves, the sedimentary and structural characters of Pre-Jurassic strata will become clear, and more stratigraphic traps, lithologic traps and structural traps will be found easily. And the results can be used to instruct the exploration of oil and gas in the East of Junggar Basin.
There is very good potential for oil and gas exploration in the Dongdaohaizibei Sag of Junggar Basin. But the seismic reflection waves of Pre-Jurassic strata were covered by long-range and interbedded multi-waves of Jurassic coals, and it can’t reveal the real sedimentary characters and structural styles of the Pre-Jurassic strata. Because the reflection waves of Jurassic coals are so strong that the deflection and interbedded reflection formed in them or between them and caused the multi-waves of seismic reflection. Only after solving the problems of the multi-waves, the sedimentary and structural characters of Pre-Jurassic strata will become clear, and more stratigraphic traps, lithologic traps and structural traps will be found easily. And the results can be used to instruct the exploration of oil and gas in the East of Junggar Basin.
引文
[1]新疆石油管理局、中科院资源环境科学局.准噶尔盆地油气地质综合研究[R].甘肃科技出版社,1992.
[2]费琪,等.成油体系分析及模拟[M].中国地质大学出版社,1997.
[3]何登发,吕修祥,等.前陆盆地分析[M].石油工业出版社,1996.
[4]徐怀宝,等.准噶尔盆地东部速度异常原因分析[J].石油地球物理勘探,2002,(9):12-15.
[5]朱筱敏,等.准噶尔盆地东北缘侏罗系含煤岩系层序地层和隐蔽圈闭[J].石油与天然气地质,2002,6(3):25-28.
[2]费琪,等.成油体系分析及模拟[M].中国地质大学出版社,1997.
[3]何登发,吕修祥,等.前陆盆地分析[M].石油工业出版社,1996.
[4]徐怀宝,等.准噶尔盆地东部速度异常原因分析[J].石油地球物理勘探,2002,(9):12-15.
[5]朱筱敏,等.准噶尔盆地东北缘侏罗系含煤岩系层序地层和隐蔽圈闭[J].石油与天然气地质,2002,6(3):25-28.
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